Well I got the front end tore apart and the Bulks split. This is my first time tearing down a Revo. I'm impressed with the design. It's a tad more complex than the E maxx.
I took out the front stock diff. There's something wrong with it. It's leaking grease everywhere. When I spin the pinion, it feels like the ring gear inside is warped or something. It spins freely for about 1/3 of turn, then I feel the gear mesh and there's ALOT of drag. Hmmmmmm.........Aaah well, I'm not gonna trouble shoot it right now.
This does point toward the fact that this diff was dragging the setup down though.
The RCM diffs feel sooooooooooo smooth and spin VERY freely.
@Drknow:
Let me get this perfected. I'll show you the EXACT setup to go with and some video's.